
class Count{
    private int count=0;

    public void add(){
        count++;
    }

    public int getCount(){
        return count;
    }
}



public class Demo1 {
    public static void main(String[] args) throws InterruptedException {
        Object object=new Object();
        Count count=new Count();
        Thread t1=new Thread(()->{
            for (int i=0;i<50000;i++) {
                synchronized (object){
                    count.add();
                }
            }
        });

        Thread t2=new Thread(()->{
            for (int i=0;i<50000;i++) {
                synchronized (object){
                    count.add();
                }
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count的结果是"+count.getCount());
    }
}
